DeviantArt
has, arguably, become one of the top sources for free graphics
downloads. If you are looking for something contemporary and original
DeviantArt is the first place you should look. And they have a lot to
offer for iPhone users. Let’s see:

BluePrint
This one is our favorite. The pencil-sketch, monochrome style makes
this icons set stand out from all the other festive and glossy ones.

Aquaticus
Soft colors, nice gradients and clear analogies make this icon set a perfect example of a high-quality design.